A Non-randomised, Non-inferiority Comparative Study of Oral Actiskenan (Morphine Sulfate) Versus Intranasal Sufentanil in the Early Management of Severe Acute Pain in Emergency Departments.

The main objective of this study is to evaluate whether the analgesic protocol combining oral Actiskenan is non-inferior to the protocol combining intranasal Sufentanil for treating severe pain in patients admitted to the emergency department. The primary endpoint will be the difference between the numerical pain rating scale score at the initial assessment performed by the triage nurse (baseline) and the numerical pain rating scale score measured 30 minutes after treatment administration.